Closure



' June-24, 1930. c. H. BELL 1,767,040

CLOSURE Filed July 19, 1928 ATTORNEY INVENTOR Patented June 24, 1930UNITED STATES PATENT OFFICE CHARLES H. BELL, 0F CLEVELAND HEIGHTS, OHIO,ASSIGNOR, BY MESNE ASSIGN- MIEHVTS, TO THE EATON AXLE & SPRING COMPANY,OF CLEVELAND, OHIO, A COR- PORATION OF OHIO ctosunn Application filedJuly 19,

10. sive construction and highly efficient in use.

Further objects of the invention are in part obvious and in part willappear more in detail hereinafter.

- Inthe drawing, Fig. 1 is a plan view of a 15 closure embodying myinvention; Fig. v2 is a cross-sectional view taken on line 22 of Fig. 4;Fig. 3 is a cross-sectional view of the closure detachably connected toa tubular neck surrounding the opening tobe closed,

20 the section through the closure being on the line 3-3, Fig. 1; Fig. 4is a bottom plan view of the closure; Fig. 5 is a top plan view of theneck shown in Fig. 3; and Fig. 6 is a vertical sectional view of saidneck on 25 the line 6-6, Fig. 5.

In the present illustrationof the invention, 1 represents an automobileradiator, fuel tank or other object having an opening 2 to be closed.which opening is surrounded by a tubular neck to which the closure isadapted to be detachably secured by a bayonet joint connection. cludes acylindrical body portion 3 which may be an integral part of member 1 orseparated therefrom and. suitably secured thereto, the latterarrangement being here shown with said body portion provided with anoutwardly extending, annular base flange at for welding or othersuitable securement to member 1." Said body portion is provided at itsupper end with an inwardly extending annular flange 5 which terminatesin a depending flange 6, and. at two diametrically opposed points, partsof flanges 5 and 6 are cut away to provide two passage-ways 7 for thelocking fingers of the closure, as,will later appear. The cutting awayof said flange parts provides two depending flange portions 6 ofsubstantially semi-circular form and the two lower edges of these flangeSaid neck in-- 1928. Serial No. 293,851.

portions are inclined to provide two cam surfaces 8 with which theclosure locking fingers are adapted to cooperate in effecting adetachable connection of the closure to the neck. Preferably, a recessor dwell 9 is pro vided at the rear end of each cam surface and adjacenteach dwell each flange portion 6 is provided with a depending projection10 to form stops for the closure locking fin gers and thus limit rotarymovement thereof relative to the neck, all as will appear hereinafter.

The "closure of the present application includes acne-piece body memberhaving a central dome-shaped portion 15, a marginal portion 16 ofannular form and a depending skirt portion 17 of cylindrical form, saidskirt portion being preferably but slightly larger in diameter than thatof the neck body portion 3 with which it is adapted for telescopicrelation. Arranged within this body member is the locking member of theclosure, which is here shown as of inverted, substantially cup shape. Itincludes a dome-shaped top portion 18 and a cylindrical side wallportion 19 which is provided at its lower end with two outwardlyextending, tions 20 adapted for locking engagement with the camesurfaces 8 of the neck, as will later appear.

Arranged between said body and locking members is a resilient member toenable the closure locking fingers to engage. the cam surfaces 8 of theneck with yielding effect and thus prevent undue wear of the gasket 22with .which the closure is usually provided. As here shown, thisresilient member is of metal and includes a central securing portion 24:and two or more downwardly and outwardly extending resilient arms 25,

diametrically opposed finger porfour circumferentially spaced arms beingmember to the closure body member, but in the embodiment here shown, acouple of rivets 28 are employed, which pass through the centralportions of these three members, as clearly indicated in Figs. 2 and 3.

The closure is detachably connected to the neck by passing theclosure'locking finger portions down through the passage-ways 7 of theneck and then imparting clockwise rotary movement to the closure so asto cause said finger portions to ride up the cam surfaces 8 until theyreach the dwells 9, further rotary movement of said finger portionsbeing prevented by the stop projections 10. The movement of said fingerportions up along said cam surfaces causes the closure to be drawn downupon the neck with resilient effect, the arm end portions 26 of theresilient member and the gasket 22 moving up against the marginalportion 16 of the closure body member, as clearly indicated in Fig. 3.During the connection of the closure to the neck, the gasket 22 liesbetween the top flange 5 of the neck and the arm end portions 26 of theresilient member, and tightly seals the opening being closed.

To remove the closure from the neck, itis only necessary to turn theclosure in a counter-clockwise direction which causes the fingerportions thereof to leave the dwells 9 and ride down the cam surfaces 8until they reach the passage-ways 7, whereupon the closure can bereadily lifted from the neck. When the closure is removed from the neck,said gasket is prevented from becoming disassembled from the closure bythe locking fingers 20 thereof which extend outwardly beneath saidgasket.

To vent to the atmosphere the interior of the neck and hence theinterior of member 1 when the closure is connected to the neck, suitablevent apertures areprovided in the closure. In the present embodiment ofthe invention, an aperture 30 is provided in the top portion 18 of thelooking member and an aperture 31 is provided in the domeshaped portion15 of the body member, thereby providing a circuitous vent means whichprevents the contents of member 1 from splashing out if a short neck isused.

What I claim is:

1. A closure for necks having opposed rigid cam portions, comprising abody member, a locking member having rigid locking fingers forcooperative locking engagement with the cam portions of a neck, and aninherently resilient member having the central part thereof rigidlysecured between said body member and said locking member and havingother parts thereof arranged to press against the outer end of a neck,'whereby said fingers engage said cam portions with yielding efi'ect.

2. A closure for necks having opposed rigid cam portions, comprising abody memfingers for cooperative locking engagement with the cam portionsof a neck, means clamping said locking member for rotationv with saidbody member, and an inherently resilient member having a centralsecuringportion interposed between said locking member and said bodymember and through which portion the clamping means for said lockingmember extends, said resil ent member also having outer gasket engagingmeans arranged substantially concentric with sa d central securingportion whereby said rigid locking fingers yieldingly engagesaid camportions when the closure is applied to the neck.

4;. A closure for neck's having opposed rigid cam portions, comprising,a one-piece body member having a top portion and a depending skirtportion, a one-piece locking member having a top portionand a dependingside wall portion provided at its lower edge with opposed outwardlyextend ng rigid locking extensions for cooperative locking engagementwith the cam portions of a neck, the top portion of sa1d locking memberbeing less in width than the top portion of said body member, and aonepiece member having inherently res1lient portions including a centralsecuring portion clamped between top portions of said body and lockingmembers, whereby said extensions engage said cam portions with yieldingefiect.

5. A closure for necks having opposed rigidcam portions, comprising aone-piece body member having a top portion and a depending skirtportion, a one-piece locking member having a top portion and adepending'side wall portion provided at its lower edge with opposedoutwardly extending rigid locking extensions for cooperative lockingengagement with the cam portions of a neck, the top portion of saidlocking member being less in width than the top portion of said bodymember, and a one-piece member having a central securing portion andopposed outwardly and downwardly extending inherently resilient armslying between the top portions of said body and locking member having atop portion i of a members, whereby said extensions engage said camportions with yielding effect.

6. A closure for necks having opposed rigid cam portions, comprising aone-piece body member havin a top portion and a depending skirt portion,a one-piece locking and a depending side wall portion provided at itslower edge with opposed outwardly extending rigid locking extensions forcooperative locking engagement with the cam portions neck, the topportion of said locking member being less 1n width than the top portionof said body member, a one-piece member having a central securingportion and opposed outwardly and downwardly ex tending inherentlyresilient arms lying between the top portions of said body and lockingmembers, whereby said extensions engage said cam portions with yieldingeffect, and a single means for maintaining the top portions of said bodyand locking members and the securing portion of said intermediate memberin assembled relation. 1

In testimony whereof I hereby aflix my signature.

' CHARLES H. BELL.

